Just bought a random mixed box on Facebay, trying to work out what sets might be there. These are the most distinctive pieces.
I can identify:
Several parts which appear together in set 76170:
- sh612 "Iron Man with Silver Hexagon on Chest" minifigure
- 11092 "Hand, Gorilla Fist" (in pearl gold)
- 73304 "Power Burst Figure Pedestal", once in trans-clear blue and once in trans-orange.
6213p02 "Brick 2 x 6 x 3 with Green, Yellow and Blue Dots Pattern", which appears in 5 sets.
4215ap18 "Panel 1 x 4 x 3 - Solid Studs with Black 'POLICE' Bar and White Stripes Pattern", which only appears in set 6684.
cty0974 "Fire - Reflective Stripes, Bright Light Orange Suit, Life Jacket, Red Fire Helmet" minifigure, which appears in two sets (the torso and head appear in other combinations, though).
4491a "Horse saddle with one clip" in yellow, which appears in 5 sets.
soc028 "Soccer Player - Green and White Team with Number 9 on Back" minifigure. I'm assuming it's no# 9 because of the mustache, but I cannot be sure, specially since the pants are wrong. Anyway there's only one set with the "green and white team" striped torsos: set 3409.
An ubiquitous orange 96874 brick separator. As I'm writing this, it appears in a whopping 1016 sets, so it's pretty much impossible to know where yours came from.
973pb0906c01 "Torso Open Jacket Hoodie with 4 Buttons over Medium Blue Sweater Pattern / Orange Arms / Yellow Hands". Since I don't trust it has the right head or the right pants, I cannot narrow down the 18 sets that minifigure torso appears in.
973px52c01 "Torso Divers Submarine Logo Pattern / Black Arms / Yellow Hands", appearing in four sets. Note that the attached head is from a clone brand.
Note that you've got some parts from clone brands - notably the "policeman in swimming shorts" minifigure, and the aforementioned head on the red "Divers" torso.
I have doubts about the worker in orange hard hat - the head might be from soc151, or from a clone brand (I recall that particular face expression being common in clone brands), plus there are no hard hats in orange.
I also have doubts about the 1x8 bricks with "fire" sticker being from a clone brand.